How to Identify and Measure Fittings
Pipe size is an industry designation, not the actual size. View information about how to measure threaded and unthreaded pipe and pipe fittings.
More
Extreme-Pressure Steel Unthreaded Pipe Flanges
For excellent strength in extreme-pressure applications, choose these heavy duty Pressure Class 1500 flanges. Bolt two same-size flanges together with a gasket (sold separately) to create an access point in a pipe line. They are for noncorrosive environments.
Butt-weld flanges are also known as weld-neck flanges; the flange neck has a beveled end that, when flush to pipe, creates a trough for a strong weld.
Slip-on weld flanges have no internal stop; slide a pipe through the flange and weld on both sides.
Socket-connect flanges have an internal stop that supports the pipe when welding and prevents the pipe from sliding all the way through.
Cap flanges are also known as blind flanges.
For technical drawings and 3-D models, click on a part number.
![](/prerenderstable/mvPRE/contents/gfx/imagecache/113/1139t41p1-c01d-digitall@halfx_637073554236222020.png?ver=imagenotfound)
![](/prerenderstable/mvPRE/contents/gfx/imagecache/113/1139t41p2-c01d-digitall@halfx_637073550614448084.png?ver=imagenotfound)
- For Use With: Air, Hydraulic Fluid, Natural Gas, Oil, Steam, Water
- Pressure Class : 1500
- Specifications Met: MSS SP-6, MSS SP-25, ASTM A105, ASME B16.5
- Certification: Material Certificate with Traceable Lot Number and Test Report
- Fittings: Use Class 6000 steel
Bolt Hole | ||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Pipe Size | Dash Size | Wall Thick. | Flange OD | For Bolt Dia. | Dia. | No. of | Bolt Circle Dia. | Max. Pressure | Max. Steam Pressure | For Pipe Schedule | Each | |
1 | 16 | 0.179" | 5 7/8" | 7/8" | 1" | 4 | 4" | 3,700 psi @ 72° F | 3,200 psi @ 300° F | 80 | 0000000 | 0000000 |
1 1/2 | 24 | 0.2" | 7" | 1" | 1 1/8" | 4 | 4 7/8" | 3,700 psi @ 72° F | 3,200 psi @ 300° F | 80 | 0000000 | 000000 |
2 | 32 | 0.218" | 8 1/2" | 7/8" | 1" | 8 | 6 1/2" | 3,700 psi @ 72° F | 3,200 psi @ 300° F | 80 | 0000000 | 000000 |
3 | 48 | 0.216" | 10 1/2" | 1 1/4" | 1 1/4" | 8 | 8" | 3,700 psi @ 72° F | 3,200 psi @ 300° F | 40 | 0000000 | 000000 |
![](/prerenderstable/mvPRE/contents/gfx/imagecache/113/1139t47p1-c01d-digitall@halfx_637073565022454567.png?ver=imagenotfound)
![](/prerenderstable/mvPRE/contents/gfx/imagecache/113/1139t47p2-c01d-digitall@halfx_637073563974073607.png?ver=imagenotfound)
- For Use With: Air, Hydraulic Fluid, Natural Gas, Oil, Steam, Water
- Pressure Class : 1500
- Specifications Met: ASME B16.5, ASTM A105, MSS SP-25, MSS SP-6
- Certification: Material Certificate with Traceable Lot Number and Test Report
- Fittings: Use Class 6000 steel
![](/prerenderstable/mvPRE/contents/gfx/imagecache/113/1139t61c1-c01d-digital-master1571434283-p9@halfx_637070678880710938.png?ver=imagenotfound)
![](/prerenderstable/mvPRE/contents/gfx/imagecache/113/1139t61p2-c01d-digitall@halfx_637073562434306815.png?ver=imagenotfound)
- For Use With: Air, Hydraulic Fluid, Natural Gas, Oil, Steam, Water
- Pressure Class : 1500
- Specifications Met:
3 and 4 Pipe Sizes: ASTM A105
All other sizes: ASME B16.5, ASTM A105, MSS SP-25, MSS SP-6 - Certification: Material Certificate with Traceable Lot Number and Test Report
- Fittings: Use Class 6000 steel
Bolt Hole | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
Pipe Size | Dash Size | Flange OD | For Bolt Dia. | Dia. | No. of | Bolt Circle Dia. | Max. Pressure | Max. Steam Pressure | For Pipe Schedule | Each | |
3/4 | 12 | 5 1/8" | 3/4" | 7/8" | 4 | 3 1/2" | 3,700 psi @ 72° F | 3,200 psi @ 300° F | 80 | 0000000 | 0000000 |
1 | 16 | 5 7/8" | 7/8" | 1" | 4 | 4" | 3,700 psi @ 72° F | 3,200 psi @ 300° F | 80 | 0000000 | 000000 |
1 1/2 | 24 | 7" | 1" | 1 1/8" | 4 | 4 7/8" | 3,700 psi @ 72° F | 3,200 psi @ 300° F | 80 | 0000000 | 000000 |
2 | 32 | 8 1/2" | 7/8" | 1" | 8 | 6 1/2" | 3,700 psi @ 72° F | 3,200 psi @ 300° F | 80 | 0000000 | 000000 |
![](/prerenderstable/mvPRE/contents/gfx/imagecache/113/1139t54p1-c01d-digitall@halfx_637073579731704009.png?ver=imagenotfound)
![](/prerenderstable/mvPRE/contents/gfx/imagecache/113/1139t54p2-c01d-digitall@halfx_637073560724249580.png?ver=imagenotfound)
- For Use With: Air, Hydraulic Fluid, Natural Gas, Oil, Steam, Water
- Pressure Class : 1500
- Specifications Met: MSS SP-6, MSS SP-25, ASTM A105, ASME B16.5
- Certification: Material Certificate with Traceable Lot Number and Test Report
- Fittings: Use Class 6000 steel
Bolt Hole | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|
Pipe Size | Dash Size | Flange OD | For Bolt Dia. | Dia. | No. of | Bolt Circle Dia. | Max. Pressure | Max. Steam Pressure | For Pipe Schedule | Each | |
1/2 | 08 | 4 3/4" | 3/4" | 7/8" | 4 | 3 1/4" | 3,700 psi @ 72° F | 3,200 psi @ 300° F | Any | 0000000 | 0000000 |
3/4 | 12 | 5 1/8" | 3/4" | 7/8" | 4 | 3 1/2" | 3,700 psi @ 72° F | 3,200 psi @ 300° F | Any | 0000000 | 000000 |
1 | 16 | 5 7/8" | 7/8" | 1" | 4 | 4" | 3,700 psi @ 72° F | 3,200 psi @ 300° F | Any | 0000000 | 000000 |
1 1/4 | 20 | 6 1/4" | 7/8" | 1" | 4 | 4 3/8" | 3,700 psi @ 72° F | 3,200 psi @ 300° F | Any | 0000000 | 000000 |
1 1/2 | 24 | 7" | 1" | 1 1/8" | 4 | 4 7/8" | 3,700 psi @ 72° F | 3,200 psi @ 300° F | Any | 0000000 | 000000 |
2 | 32 | 8 1/2" | 7/8" | 1" | 8 | 6 1/2" | 3,700 psi @ 72° F | 3,200 psi @ 300° F | Any | 0000000 | 000000 |
3 | 48 | 10 1/2" | 1 1/4" | 1 1/4" | 8 | 8" | 3,700 psi @ 72° F | 3,200 psi @ 300° F | Any | 0000000 | 000000 |
4 | 64 | 12 1/4" | 1.38" | 1.38" | 8 | 9 1/2" | 3,700 psi @ 72° F | 3,200 psi @ 300° F | Any | 0000000 | 000000 |